#include <iostream>				//#include <stdio.h>	input output staream
using namespace std;			//使用命名空间
#include <cstdio>				//#inlude <stdio.h>

struct stu{
	int 	x;
	int 	y;
}tom;

int main(int argc,char **argv)
{
	/*
		输出helloword到终端
		cout endl  不是函数   是对象(变量)
		<< 标准输出流运算符
		>> 标准输入流运算符
		不能输出结构体类型
	*/
	cout << "hello world" << endl;			//endl == '\n'
	cout << "hello world" << '\n';			//endl == '\n'
	cout << "hello world";
	cout << endl;		//cout << "\n";

	printf("%d, %lf, %s, %c\n", 10, 2.5, "abc", 'c');
	cout << 10 << 2.5 << "abc" << 'c' << endl;
	//cout << tom << endl;			//不能输出自定义类型
	return 0;
}



